Section SPS 382.34 - Wastewater treatment and holding devices(1) SCOPE. The provisions of this section set forth the requirements for design and installation of plumbing wastewater treatment and holding devices, appurtenances and systems, including but not limited to interceptors, catch basins, decontamination tanks and dilution and neutralizing basins.(2) MATERIALS. All piping, devices and appliances for wastewater treatment and holding devices, appurtenances and systems shall be of approved materials in accordance with ch. SPS 384.(3) GENERAL. Any deleterious waste material which is discharged into a plumbing system shall be directed to a wastewater treatment or holding device. The wastewater treatment or holding device shall be capable of separating, diluting or neutralizing the deleterious waste material to a degree that the wastewater is no longer deleterious. Wastewater treatment or holding devices that retain any waste materials shall be designed and installed to facilitate periodic removal or treatment, or both. (a)Treatment for reuse.1. Except as limited in subd. 2., graywater, storm water, clear water, blackwater and other wastewaters as approved by the department may be reused in conformance with s. SPS 382.70.2. Except as provided in subd. 3., wastewater discharged from water closets or urinals shall not be reused for drinking water.3. All treatment works permitted by the department of natural resources, or a POWTS which includes an in situ soil dispersal or treatment component may treat wastewater discharged from water closets or urinals for reuse.(b)Deleterious waste materials. For the purpose of this subsection, deleterious waste materials include any waste material, other than that from dwelling units, which may: 1. Congeal, coagulate or accumulate in drains and sewers, thereby, creating stoppages or retarding the discharge flow;2. Retard or interfere with municipal sewage treatment processes;3. Pass through a treatment process and pollute the watercourse receiving the treatment effluent;4. Create explosive, flammable, noxious, toxic or other hazardous mixtures of materials; or5. Damage, destroy or deteriorate sewers or piping materials or structures. Note: See ch. ATCP 93 as to flammable, combustible, and hazardous liquids.
(c)Private systems. The special or industrial wastes from any plumbing system shall be treated, held or dispersed in compliance with the rules of the state agency having jurisdiction. The treatment, holding or dispersal system shall be installed so as not to endanger any water supply which is or may be used or which may create a nuisance, unsanitary conditions or water pollution.(d)Velocity control. Interceptors, catch basins and other similar devices shall be designed, sized and installed so that flow rates shall be developed and maintained in a manner that solid and floating materials of a harmful, hazardous or deleterious nature will be collected in the interceptor for disposal.(e)Maintenance. All devices installed for the purpose of intercepting, separating, collecting, holding or treating harmful, hazardous or deleterious materials in liquid or liquid-borne wastes shall be operated and cleaned of intercepted or collected materials or of any residual from treatment at such intervals which may be required to prevent their passage through the interceptor. Grease interceptors shall be maintained on a cycle not to exceed 90 days or per manufacturer's instructions.(f)Service reassembly. Any fixed orifice, vent or trap of an interceptor, catch basin or other similar device shall remain intact and shall not be removed or tampered with except for cleaning purposes. After service, all parts of the interceptor, collector or treatment device, such as baffles, weirs, orifice plates, channels, vents, traps, tops, and fastening bolts or screws shall be replaced in proper working position.(g)Location.1. Wastewater holding devices, interceptors, catch basins and other similar devices shall be accessible for service, maintenance, repair and inspection. a. No wastewater holding device, interceptor, catch basin or similar device may be surrounded or covered as to render it inaccessible for service or inspection.b. No wastewater holding device, interceptor, catch basin or similar device may have its top located more than 6 feet above the surrounding floor.c. Enough space shall be provided to enable the removal of any interior parts of the wastewater holding device, interceptor, catch basin or similar device.d. At least 18 inches of clear space shall be provided above the top of the wastewater holding device, interceptor, catch basin or similar device.2. An exterior wastewater holding device, interceptor, catch basin or similar device shall not be located within 5 feet of a building or any portion of a building or swimming pool; 10 feet of water service; 2 feet of a lot line and 10 feet of a clearwater cistern.3. An exterior wastewater holding device, interceptor, catch basin, or similar device shall not be located within 10 feet of the high water mark of a lake, stream, pond or flowage.4. An exterior subsurface treatment tank holding component, or reservoir to be installed in an area subject to saturated conditions, shall be installed to effectively prevent flotation of the tank or component. Note: The department of natural resources under chs. NR 811 and 812 may require additional setbacks. See ch. SPS 382 Appendix for further explanatory material.
(h)Disposition of retained materials. Deleterious waste materials retained by a wastewater holding device, interceptor, catch basin or similar device shall not be introduced into any drain, sewer or natural body of water without approval of the state agency having jurisdiction.(4) GARAGE FLOOR AREA WASTEWATER. (a)Garages for public buildings and facilities.1. Where a drain will be installed to receive the wastewater from floor areas of public buildings and facilities on which self-propelled land, air or water vehicles can be driven, the wastewater shall discharge using one of the following methods: a. In areas where vehicles will be serviced, the wastewater shall discharge through a garage catch basin or oil interceptor connected to a municipal sewer or holding tank approved to receive industrial wastewater.b. In areas where vehicles will be driven or stored, the wastewater shall discharge through a floor drain equipped with a solid bottom sediment bucket, garage catch basin or oil interceptor.2. Garage catch basins design shall conform to all of the following: a. The holding area of the catch basin shall be watertight.b. The catch basin shall have a minimum inside diameter of 366.c. The minimum depth of the basin shall be 24" measured from the lowest portion of the trap on the outlet of the basin.d. The outlet of the basin shall be at least 4" in diameter and trapped with a water seal of at least 6" and constructed on the interior or exterior of the basin. Where an external trap is provided, the trap shall be within 36" of the basin.e. Except as provided in subd. 5., the water line in the basin shall be at least 2" below all horizontal drains discharging into the basin. Where an external trap is provided, the measurement point on the horizontal drain shall be upstream of the trap.f. The basin shall be provided with a cover at least 23 inches square or 23 inches in diameter.g. Gravity drains from fixtures serving garage floor areas located on different floors from the basin may discharge into the basin if the drain stack carrying the wastewater is located at a distance equal to at least 20 times the inside diameter of the horizontal piping upstream of the basin.h. Catch basins with solid covers shall be vented in accordance with sub. (8) (c).3. Drains with traps may connect to the garage catch basin under all of the following conditions:a. The trap shall be a minimum of 3" in diameter.b. Except as provided in subd. 3. c., the developed length from all trap outlets to the basin shall not exceed the distance as specified in Table 382.31-1.c. Where the maximum distance exceeds that as specified in Table 382.31-1, the trap shall be vented in accordance with s. SPS 382.31 (3) and the connection to the basin shall form a 6-inch trap seal. The trap seal may be constructed on either the interior or exterior of the basin, but within 36" of the basin.4. Drains without traps may discharge into a garage catch basin under all of the following conditions: a. The fixture drain shall have a minimum 4-inch inside diameter.b. The fixture drain shall be piped with a 6-inch water seal constructed either on the interior or exterior of the basin.c. An exterior trap shall be constructed within 36" of the basin.d. The developed length of the fixture drain shall not exceed the distance equal to 24 times the diameter of the fixture drain.e. Fixture drains shall individually discharge into a garage catch basin.5. Pressurized drains from garage floor areas discharging to a garage catch basin shall conform to all of the following conditions: a. The pressurized drain piping shall terminate inside the basin with a 6-inch submerged inlet. The termination shall be at least 12" above the floor of the basin.b. The pressurized equipment, devices and piping shall be designed and installed to produce a maximum velocity of 2 feet per second at the point of connection to the basin. Note: Plans for garage floor discharge-holding tanks may require plan approval by the department of natural resources.
(b)Garages for one- and 2-family dwellings.1. Floor drains serving garages for one- and 2-family dwellings shall be provided with a removable solid bottom sediment basket. Note: See ch. SPS 382 Appendix for further explanatory material.
2.a. Except as permitted in subd. 2. b., catch basins serving garages for one- and 2-family dwellings shall be designed and installed in accordance with par. (a) 2. b. The minimum inside diameter of catch basins serving garages for one- and 2-family dwellings shall be 18 inches. (c)Grates for garage catch basins, floor drains and trenches. A garage catch basin, floor drain, and trench drain shall be provided with an approved, removable grate of sufficient strength for the anticipated loads. The grate shall have an available inlet area equal to at least the outlet drain for the catch basin, floor drain or trench drain. Note: Residential exclusion see s. SPS 325.01 (4) (c).
(5) GREASE AND OIL TREATMENT. (a) All plumbing installations for occupancies, other than dwelling units, where grease, fats, oils or similar waste products of cooking or food are introduced into the drain system shall be provided with grease and oil treatment in accordance with this subsection.(b)General.1. 'Public sewers.' All new, altered or remodeled plumbing systems which discharge to public sewers shall be provided with one or more grease interceptors. a. Where one or more exterior grease interceptors are provided all, and only, kitchen wastes shall be discharged to an exterior interceptor.b. Except as required in subd. 1. c. or d., where one or more interior grease interceptors are provided the wastes from a food waste grinder, a sanitizing compartment of a sink or a rinse compartment of a sink, may bypass the interceptor or interceptors.c. The wash compartment of a scullery sink shall discharge through a grease interceptor.d. The pre-wash compartment not discharging through a garbage disposal shall discharge through a grease interceptor.2. 'Private onsite wastewater treatment systems.' All new, altered, or remodeled plumbing systems which discharge to private onsite wastewater treatment systems shall be provided with grease interceptors of sufficient capacity to ensure compliance with s. SPS 383.44 (2). a. Except as provided in subd. 2. b., only kitchen and food wastes shall be discharged to an exterior grease interceptor.b. For remodeling, when it is not practicable to separate kitchen and toilet wastes, combined kitchen wastes and toilet wastes may be discharged directly to a private onsite wastewater treatment component tank or tanks which conform to par. (c). The required capacity of a grease interceptor shall be added to the required septic tank capacity as specified in ch. SPS 383.c. For holding tank installations, the combined kitchen and toilet wastes may discharge directly to a holding tank where the location accepting the pumpage from the tank provides written acceptance of the combined waste to the department.3. 'Existing installations.' The department or authority having jurisdiction may require the installation of any treatment device deemed necessary by the department or authority having jurisdiction for existing plumbing installations where the waterway of a drain system, sewer system, or private onsite wastewater treatment system is reduced or filled due to grease.(c)Exterior grease interceptors. Exterior grease interceptors shall receive the entire greasy waste discharge from kitchens or food processing areas. All exterior interceptors shall be designed and constructed in accordance with this paragraph, so as to constitute an individual structure. 1. 'Design.' a. The liquid depth of the interceptor shall not be less than 42" nor more than an average of 72".b. A rectangular interceptor tank shall have a minimum width of 366 and a minimum length of 72". The longest dimension of the tank shall be parallel to the direction of waste flow.c. A horizontal-cylindrical interceptor tank shall have a minimum inside diameter of 52" and a minimum length of 72". The longest dimension of the tank shall be parallel to the direction of waste flow.d. Vertical-cylindrical interceptor tanks shall have a minimum inside diameter of 72".e. Each prefabricated interceptor tank shall be clearly marked to indicate liquid capacity and the name and address or registered trademark of the manufacturer. The markings shall be impressed into or embossed onto the outside wall of the tank immediately above the outlet opening. Each site-constructed concrete tank shall be clearly marked at the outlet opening to indicate the liquid capacity. The marking shall be impressed into or embossed onto the outside wall of the tank immediately above the outlet opening.f. The inlet and outlet openings of interceptor tanks or tank compartments shall be provided with, open-end sanitary tee fittings or baffles, so designed and constructed as to distribute the flow and retain the grease in the tank or tank compartments. The sanitary tee fittings or baffles shall extend at least 6" above the liquid level. At least 2" of clear space shall be provided above the top of the sanitary tee fittings or baffles. The sanitary tee fitting or baffle at the inlet opening shall extend below the liquid level of the tank a distance equal to 1D 3 of the total liquid depth. The sanitary tee fitting or baffle at the outlet opening shall extend below the liquid level of the tank a distance equal to 2D 3 of the total liquid depth. The waterline in the interceptor shall be at least 2" below the horizontal drain discharging to the interceptor.g. Any new or replacement exterior grease interceptor shall have at least two compartments. Each compartment of an interceptor tank shall be provided with at least one manhole opening located over either the inlet or outlet opening. Additional manhole openings shall be provided such that no interior compartment wall of a tank is more than 4 feet from the edge of the manhole opening. The distance between manhole openings serving the same compartment may not exceed 8 feet. Manhole openings shall be not less than 23 inches in the least dimension. Manholes shall terminate at or above ground surface and be of approved materials. Steel tanks shall have a minimum 2-inch collar for the manhole extensions permanently welded to the tank. The manhole extension on fiberglass tanks shall be of the same material as the tank and an integral part of the tank. The collar shall have a minimum height of 2 inches.h. Manhole risers for interceptor tanks shall be provided with a substantial, fitted, watertight cover of concrete, steel, cast iron or other approved material. Manhole covers shall terminate at or above grade and shall have an approved locking device.i. A minimum 4 X 6 inch permanent label shall be affixed to the manhole cover, identifying the interceptor tank with the words GREASE INTERCEPTOR. Where the tank acts as the septic tank and grease interceptor the label shall identify it as such. The wording used on the warning label shall be approved by the department, as part of the materials approval for the tank under ch. SPS 384.j. An inlet or outlet opening which does not have a manhole opening as specified in subd. 1. g. shall be provided with an airtight inspection opening located over the inlet or outlet. The inspection opening shall be at least 4" in diameter. The inspection opening shall terminate at or above grade. Note: See ch. SPS 382 Appendix for further explanatory material.
2. 'Capacity and sizing.' The minimum liquid capacity of a grease interceptor shall be determined in accordance with the provisions of this subdivision, except no grease interceptor may have a capacity of less than 1000 gallons if the interceptor is to discharge to a private onsite wastewater treatment system or less than 750 gallons if the interceptor is to discharge to a municipal sewer system and treatment facility. a. The minimum capacity of a grease interceptor serving a restaurant with seating shall be equal to C, where See Image
b. The minimum capacity of a grease interceptor serving a dining hall, hospital, nursing home, school kitchen, church kitchen or a kitchen for carryout or delivery service shall be equal to C, where: See Image
c. The minimum capacity of a grease interceptor as determined in subd. 2. a. or b. may be halved for establishments with all paper service, but may not be less than 1000 gallons if the interceptor is to discharge to a private sewage system or less than 750 gallons if the interceptor is to discharge to a municipal sewer system and treatment facility. 3. 'Installation.' a. Grease interceptor tanks may not be located within 5 feet of a building or any portion of the building or swimming pool; 10 feet of a water service; 2 feet of a lot line; 10 feet of a cistern or 10 feet of a reservoir or high water mark of a lake, stream, pond or flowage. Note: The department of natural resources under chs. NR 811 and 812 may require additional setbacks. See ch. SPS 382 Appendix for further explanatory material.
b. Where a grease interceptor tank is installed in groundwater, the tank shall be adequately anchored.c. Grease interceptor tanks shall be installed on a bedding of at least 36 in depth. The bedding material shall be sand, gravel, granite, limerock or other noncorrosive materials of a size that all will pass through a 3/4" sieve.d. The backfill material for steel and fiberglass grease interceptor tanks shall be as specified in subd. 3. c. for bedding and shall be tamped into place. The backfill material for concrete grease interceptor tanks shall be soil material, of a size that will pass through a 4 inch screen and shall be tamped into place.e. All joints on concrete risers and manhole covers for a grease interceptor shall be tongue and groove or shiplap type and sealed watertight using neat cement, mortar or bituminous compound. All joints on steel risers for a grease interceptor shall be welded or flanged and bolted and be watertight. All steel manhole extensions from a grease interceptor shall be bituminous coated inside and outside. All methods of attaching fiberglass risers for a grease interceptor shall be watertight and approved by the department. Note: See ch. SPS 382 Appendix A-382.30 (11) (d) for material reprinted from s. NR 812.08. Section NR 812.08 may have additional setback requirements to wells.
(d)Interior grease interceptors.1. 'Flow rating.' An interior grease interceptor shall be capable of accommodating a flow of at least 15 gallons per minute, but not less than the manufacturer's specifications.2. 'Flow rate related to connected capacity.' Three-fourths of the total holding capacity in gallons of all fixtures and devices discharging to an interior grease interceptor, shall not exceed the value of the maximum flow rate which the interceptor can accommodate.3. 'Grease holding capacity as related to flow rate.' The grease holding capacity in pounds shall not be less than double the value of the maximum flow rate which the interceptor can accommodate.4. 'Flow controls.' Where required by the manufacturer, devices which control the rate of flow through an interior grease intercept shall be installed.a. The flow control devices shall be accessible for inspection, service and cleaning.b. Flow controls shall be installed in the drain branch leading to each fixture and shall be so rated that the combined flow from all combinations of discharge will not develop either sufficient static or velocity head so the established flow rate of the interceptor can be exceeded. Note: See ch. SPS 382 Appendix for further explanatory material.
5. 'Flow control vents.' Orifice type flow controls for an interior grease interceptor shall be vented in accordance with s. SPS 382.31.6. 'Prohibited locations and types.' No water-cooled grease interceptor may be installed. No grease interceptor may be located where the surrounding temperatures, under operating conditions, are less than 40° F.7. 'Horizontal inlet requirements.' A maximum of 12 inches of horizontal inlet pipe may be submerged.8. 'Sizing calculations for greasy wok waste.' For calculating greasy waste for a wok, the following formula may be used: See Image
(e)Prohibited treatment. The introduction of grease or fat emulsifiers into a grease interceptor shall be prohibited.(6) AUTOMATIC CAR WASHES. The wastes of floor drains and drain inlets of automatic car washes shall discharge through an approved car wash interceptor. (a)Design. Except as provided in subds. 1. and 2. and par. (b), car wash interceptors shall be constructed and installed in accordance with sub. (4) (a) 2. 1. The interceptor's outlet shall be submerged to form a trap with a water seal of at least 15".2. The bottom of the trap's water seal shall be at least 30" above the bottom of the interceptor.(b)Capacity. The minimum liquid capacity of the interceptor shall be based on the maximum flow rate of water through the interceptor in gallons per minute. 1. Between the waterline and the bottom of the trap seal of the outlet, the interceptor shall have a capacity value equal to at least 5 times the maximum flow rate.2. Below the bottom of the trap seal of the outlet, the interceptor shall have a capacity value equal to at least 15 times the maximum flow rate. Note: See ch. SPS 382 Appendix for further explanatory material.
(c)Hand-held car washing wands. The wastes of floor drains and drain inlets serving 2 or more hand-held car washing wands shall discharge through an approved car wash interceptor. The wastes of one hand-held car washing wand may discharge to a garage catch basin.(7) COMMERCIAL LAUNDRIES. Wastes from gravity dump-type clothes washing equipment shall be discharged through an approved laundry interceptor in accordance with this subsection.(a)Screening apparatus. A laundry interceptor shall be equipped with a wire basket or other device which will prevent the passage of solids, 1D 2" or larger in diameter, string, buttons and other detrimental materials into the drain system.(b)Trench type interceptors. A floor receptor, trench or trough as specified in s. SPS 382.33 (9) (c) 3., may serve as a laundry interceptor, if no oils or quantities of sand are discharged into it. Note: See ch. SPS 382 Appendix for further explanatory material.
(c)In-line interceptor.1. In-line interceptors shall have a minimum inside diameter or horizontal dimension of 24".2. An in-line interceptor shall be provided with an air-tight cover.3. An in-line interceptor shall be provided with a vent.a. The vent shall extend from above the flow line to a vent terminal in accordance with s. SPS 382.31 (16) or shall be connected to the venting system serving the sanitary drain system.b. The diameter of the vent shall be at least one-half of the diameter of the interceptor's outlet, but not less than 2".4. The outlet for an in-line interceptor shall be at least 46 in diameter. The outlet shall be submerged to form a trap with a water seal of at least 12". The bottom of the trap's water seal shall be at least 12" above the bottom of the interceptor.5. The waterline in an in-line interceptor shall be at least 2" below the bottom of the inlet opening for the interceptor.(8) OIL AND FLAMMABLE LIQUIDS. Oily and flammable wastewater that discharges to a building sewer shall be intercepted or treated by a means acceptable to the department. (a)Site-constructed interceptors. Site-constructed interceptors shall be designed in accordance with the requirements in sub. (4) (a) 2.(b)Prefabricated oil interceptors and separators. Prefabricated oil interceptors and separators shall be manufactured with adequate capacity for the anticipated load.(c)Venting. Oil and flammable interceptors and separators shall be so designed to prevent the accumulation of explosive gases. 1. A covered interceptor or separator shall be provided with an individual vent of at least 3 inches in diameter. The vent shall extend from the top of the interceptor or separator or as high as possible, from the side of the interceptor or separator to a point at least 12 feet above grade.2. The drain pipe to the interceptor or separator shall be provided with a fresh air inlet connected within 2 feet of the inlet of the interceptor or separator. The fresh air inlet shall terminate at least one foot above grade, but not less than 6 feet below the terminating elevation of the vent serving the interceptor or separator. The fresh air inlet shall be at least 3 inches in diameter. Note: See ch. SPS 382 Appendix for further explanatory material.
(9) BOTTLING ESTABLISHMENTS. Wastes containing glass of bottling establishments shall be discharged through an interceptor.(10) DAIRY PRODUCT PROCESSING PLANTS. Dairy wastes from dairy product processing plants shall be discharged through an interceptor.(11) MEAT PROCESSING PLANTS AND SLAUGHTERHOUSES. The wastes from meat processing areas, slaughtering rooms and meat dressing rooms shall be discharged through an approved interceptor to prevent the discharge of feathers, entrails, blood and other materials.(12) SAND INTERCEPTORS. Sand interceptors and other similar interceptors for heavy solids shall be so designed and located as to be accessible for cleaning. The outlet for the interceptor shall be submerged to form a trap with a water seal of at least 12".(13) PLASTER AND HEAVY SOLIDS TRAP TYPE INTERCEPTORS. Plaster sinks shall be provided with plaster and heavy solids trap type interceptors.(a) The interceptor shall be installed as the fixture trap.(b) The drain piping between the sink and the interceptor shall not exceed a length of 36". Note: See ch. SPS 382 Appendix for further explanatory material.
(14) CHEMICAL WASTE PIPING SYSTEMS. All chemical wastes having a pH level of less than 5.5 or more than 10.0 shall discharge to a holding tank for proper disposal or to a drain system in accordance with this subsection. (a)Chemical dilution and neutralizing basins.1. All chemical wastes discharging into a drain system shall be diluted, neutralized or treated to a pH level of 5.5 to 10.0 by passing through an approved dilution or neutralizing basin before discharging to a building sewer.2. Dilution and neutralizing basins shall have the minimum retention capacities in accordance with one of the following requirements: a. The minimum retention capacity shall be as specified in Table 382.34.b. The minimum retention capacity shall be as per the manufacturer's specifications.c. The minimum retention capacity for a quantity exceeding 150 sinks or for special uses or installations shall be approved by the department.3. Where a sufficient supply of diluting water cannot be provided to a dilution or neutralizing basin, the basin shall be filled with marble or limestone chips of not less than one inch nor more than 3" in diameter to the level of the basin's outlet.4. Either the inlet or outlet of a dilution or neutralizing basin shall be submerged to form a trap with a water seal of at least 4". Table 382.34
Minimum Capacities for Dilution and Neutralizing Basins
Maximum Number of Sinks | Minimum Retention Capacity in Gallons |
1 | 5 |
4 | 15 |
8 | 30 |
16 | 55 |
25 | 100 |
40 | 150 |
60 | 200 |
75 | 250 |
100 | 350 |
150 | 500 |
(b)Vents. Vents for chemical waste systems shall be sized and installed in accordance with all of the following:1. Dilution and neutralizing basins with submerged inlets shall have a sanitary vent connected to the basin and a chemical waste vent connected to the inlet pipe. The pitch and the developed length of the drain between the submerged basin inlet and the chemical waste vent shall be in accordance with Table 382.31-1.2. Dilution and neutralizing basins with submerged outlets shall have a chemical waste vent connected to the basin and a sanitary vent connected to the outlet pipe. The pitch and the developed length of the drain between the submerged basin outlet and the sanitary vent shall be in accordance with Table 382.31-1. Note: See ch. SPS 382 Appendix for further explanatory material.
3. The vents for a chemical waste basin shall be sized based on the number of drainage fixture units discharging into the basin and installed in accordance with s. SPS 382.31.(15) SPECIAL WASTEWATER OR MIXED WASTEWATER TREATMENT OR CONTAINMENT DEVICES. Mixed wastewater treatment and containment devices, decontamination tanks or other special wastewater treatment devices shall discharge to a dispersal or treatment system in accordance with this section or as approved by the department. Note: A sanitary permit may be required. See ch. SPS 383 for requirements relating to containment tank installation with no valved discharge.
(a)Installation.1. Exterior containment devices or treatment systems for mixed wastewater, decontamination tanks and other special wastewater treatment devices shall not be located within 5 feet of a building or any portion of the building or swimming pool; 10 feet of a water service; 2 feet of a lot line; 10 feet of a clearwater cistern or 10 feet of the high water mark of a lake, stream, pond or flowage. Note: The department of natural resources under chs. NR 811 and 812 may require additional setbacks. See ch. SPS 382 Appendix for further explanatory material.
2. Containment devices or treatment systems for mixed wastewater, decontamination tanks, or other special wastewater treatment devices shall be constructed in accordance with s. SPS 384.25 or as approved by the department.(b)Vents. Vents for mixed wastewater, decontamination tanks and other special wastewater treatment systems shall be sized and installed in accordance with s. SPS 382.31.(c)Alarm system. Containment devices or treatment systems for mixed wastewater, decontamination tanks and other special wastewater treatment devices shall be equipped with an alarm.(d)Sampling provision. Containment devices or treatment systems for mixed wastewater, decontamination tanks and other special wastewater treatment devices shall be equipped to allow the collection of a representative sample.(e)Pump requirements.1. A discharge line serving a containment tank for servicing purposes shall comply with all of the following:a. A pipe serving as the discharge line shall be of an acceptable type in accordance with ch. SPS 384.b. A discharge line shall terminate with a service port consisting of a quick disconnect fitting with a removable plug.c. The service port of a discharge line shall terminate at least 2 feet above final grade.d. The service port of a discharge line shall be identified as such with a permanent sign with lettering at least ½ inch in height.e. The service port of a discharge line shall be secured to a permanent support that is capable of withstanding the loads and forces placed on the port.f. A discharge line shall be at least 3 inches in diameter. Note: The requirements in s. SPS 382.34 (15) (e) 1. apply to all discharge lines whether gravity or pump discharge. See ch. SPS 382 Appendix for further information.
2. Where a lift station is employed for servicing a containment tank, the pump discharge line shall conform with subd. 1., except as provided in subd. 2. a. and b. a. A discharge line from the lift station shall be at least 2 inches in diameter.b. The lift station pump shall be activated by means of a keyed-switch at the service port.(f)Sizing. The volume of the mixed wastewater treatment or containment device shall be based on anticipated use.(g)Vacuum relief.A vacuum relief valve shall be installed in each water treatment appliance and installed more than 20 feet above any faucet or outlet served by the appliance when measured from the bottom of the tank.(h)Wastewater retention.Where a containment tank has an outlet that is connected to a drain system, the outlet shall include a means to contain the wastewater from entering the drain system until proven to be safe for discharge.Wis. Admin. Code Department of Safety and Professional Services § SPS 382.34
Cr. Register, February, 1985, No. 350, eff. 3-1-85; am. (4) (a) 2. b., (5) (b) 2. intro., c. and (c) 4. b., Register, August, 1991, No. 428, eff. 9-1-91; am. (4) (a) 2. c. and g., 3. a., (5) (b) 1. f. and j., 3. a., (c) 1., (8) (a) 2. c., r. and recr. (5) (a) 1., r. (5) (b) 3. e. and (c) (intro.), renum. (5) (b) 3. f. to be (5) (b) 3. e., Register, February, 1994, No. 458, eff. 3-1-94; am. (5) (a) 2. (intro.), 3. and (b) 2. (intro.), Register, April, 2000, No. 532, eff. 7-1-00; am. (4) (b) 2., Register, December, 2000, No. 540, eff. 1-1-01; CR 02-002: r. and recr. (1), (2), (4) (a), (8) (a) and (b), am. (3) (intro.), (6) (a) (intro.) and (14) (b) (intro.), renum. (3) (a) to (f) to be (3) (b) to (g), cr. (3) (a) and (14) (b) 3., r. (3) (g), Register April 2003 No. 568, eff. 5-1-03; CR 02-129: am. (4) (a) 2. b. and (5) (b) 1. g. Register January 2004 No. 577, eff. 2-1-04; CR 08-055: am. (3) (a) 1., r. and recr. (4) (b) 2. and (14) (a) 2., renum. (5) (intro.) to (d) to be (5) (a) to (e) and am. (5) (a) and (b), cr. (5) (c) 7. Register February 2009 No. 638, eff. 3-1-08; CR 10-064: am. (title), (1), (2), (3) (intro.), (a), (c), (e), (g), (h), (4) (a) 2. f., (5) (c) 3. a., r. (6) (d), cr. (15) Register December 2010 No. 660, eff. 1-1-11; correction in (15) (e) 2. (intro.) made under s. 13.92(4) (b) 7, Stats., Register December 2010 No. 660; correction in (2), (3) (a) 1., (4) (a) 3. b., c., (5) (b) 2. b., (c) 1. i., (d) 5., (7) (b), (c) 3. a., (14) (a) 2. a., (b) 1., 2., 3., (15) (a) 2., (b), (e) 1. a. made under s. 13.92(4) (b) 7, Stats., Register December 2011 No. 672.Amended by, correction in (4)(c) (Note) made under s. 13.92(4) (b) 7, Stats., Register December 2015 No. 720, eff.1/1/2016Amended by, CR 23-006: am. (3) (e), cr. (3) (g) 4., am. (4) (b) 1., (c), (5) (b) 2., 3., (c) (intro.), 1. g., (d) 7., cr. (5) (d) 8., am. (15) (a) 2., cr. (15) (g), (h) Register September 2023 No. 813, eff. 10-1-23; correction in (5) (c) 1. g. made under s. 35.17, Stats., Register September 2023 No. 813, eff. 10/1/2023